Alpha Aquilae

GPTKB entity

Statements (51)
Predicate Object
gptkbp:instanceOf gptkb:star
gptkbp:age 1.2 billion years
gptkbp:alsoKnownAs gptkb:Altair
gptkbp:apparentMagnitude 2.21
0.77
gptkbp:arabicName النسر الطائر (al-nasr al-ṭāʼir)
gptkbp:BayerDesignation gptkb:Alpha_Aquilae
gptkbp:catalogueNumber gptkb:BD+08_4236
gptkb:HD_187642
gptkb:HIP_97649
gptkb:HR_7557
gptkb:SAO_125122
gptkbp:colorIndexB-V +0.08
+0.22
gptkbp:constellation gptkb:Aquila
gptkbp:declination +08° 52′ 06″
gptkbp:diameter 1.63 solar radii
gptkbp:discoveredBy ancient astronomers
gptkbp:distanceFromEarth 16.7 light years
gptkbp:eclipticLatitude 297.7°
−16.8°
gptkbp:equatorialCoordinates RA 19h 50m 47s, Dec +08° 52′ 06″
gptkbp:FlamsteedDesignation gptkb:53_Aquilae
gptkbp:hasChineseName 牛郎星 (Niú Láng Xīng)
gptkbp:hasCompanion no known companion
gptkbp:hasExoplanet no confirmed exoplanets
gptkbp:hasViewOf gptkb:Northern_Hemisphere
https://www.w3.org/2000/01/rdf-schema#label Alpha Aquilae
gptkbp:IAUApprovedName gptkb:Altair
gptkbp:isMainSequence true
gptkbp:JapaneseName 彦星 (Hikoboshi)
gptkbp:luminosity 10.6 times solar
gptkbp:mass 1.79 solar masses
gptkbp:metallicity −0.2 [Fe/H]
gptkbp:notableFeature rapid rotation
oblate shape
gptkbp:parallax 194.95 mas
gptkbp:partOf gptkb:Milky_Way
gptkb:Summer_Triangle
gptkbp:properMotionRA 385.46 mas/yr
536.82 mas/yr
gptkbp:radialVelocity −26.1 km/s
gptkbp:rightAscension 19h 50m 47s
gptkbp:rotationPeriod 286 km/s
gptkbp:spectralType gptkb:A7V
gptkbp:temperature 7550 K
gptkbp:variableStar gptkb:Delta_Scuti_variable
gptkbp:英文名 gptkb:Αλτάιρ
gptkbp:bfsParent gptkb:Altair
gptkb:Altair_(star)
gptkbp:bfsLayer 6